Could some kindhearted soul post a step by step for the following scenario? I have a 2G iphone running 1.1.4 firmware that was unlocked using Ziphone. I have a windows PC and want to upgrade to 2.0 and unlock it. The main concern I have is the ipsw file that the directions refer to. They always gloss over it, but I want to know where/how I should get that file. From what I understand, other than creating that file, it's all pretty straightforward. So I'm hoping someone can tell me exactly what all the steps are, assuming that I know very little. I imagine are others in the same situation that are anxious to upgrade but aren't entirely sure what the exact process should be. Thanks!